Recommended Hitch and Wiring Harness for a 2026 Toyota Crown Signia
Updated 02/19/2026 | Published 02/18/2026
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Question:
2026 Toyota Crown Signia. Curt C59236 converter. The factory tow interface connector in the right wheel housing has these wires. large white/blk, large blue, pink, grey, red, lt green. Can you ID them? Are they analog or PWM? Thank you.
asked by: Michael P
Expert Reply:
Hey Michael. I do not have a wiring diagram for a 2026 Crown Signia so I can not identify those wires. Your SUV does indeed have PWM system for the LED lights.
To install the Curt Powered Tail Light Converter item # C59236, you'll need to use a circuit tester like item # PTW2993 to identify the functions of the wires. I attached a wiring diagram below that shows the individual functions of the wiring harness.
Additionally, the Curt Trailer Hitch item # C35MJ you were looking at, has been confirmed to fit the 2026 Toyota Crown Signia. This is a class III hitch with a 2" receiver that has a 3,500 lbs towing capacity and a 350 lbs maximum tongue weight. It'll be great for towing a small trailer or hauling an accessory like a bike rack or a cargo carrier.
I linked an installation video below so you can see how the hitch installs.
Are you towing a trailer or just throwing lights on an accessory? What has you needing to add a 4-way to your SUV?
You can add this information, along with any other questions you have, where it says Add Comment.
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Product Page this Question was Asked From
Curt Trailer Hitch Receiver - Custom Fit - Class III - 2"
- Trailer Hitch
- For Towing
- Class III
- 350 lbs TW
- 3500 lbs GTW
- 2 Inch Hitch
- Concealed Cross Tube
- CURT
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Michael P.
2/19/2026
The Toyota Crown Signia tow interface connector is taped inside the right wheel well cover. I cut the tape and stripped back the cable shield behind the connector as far back as I could. I unsnapped the upper and lower cable hold down clips to give me more working room. Colors are as follows. Wht/Blk is ground, Blue is +12 volts, grey is running lights, red is left turn, pink is right turn, lt grn is brake. I hooked up the Curt C59236 using the blue IDC crimp terminals. The car already has a fuse up front for the blue power wire, so I didn’t add the yellow fuse holder. I fished the 4-pin trailer cable out the snap-off access cover on the right wheel well. Tested and it works!